Cam&groove coupling Alumninum. Size:1/2"-- 6", Type: A,B,C,D,E,F,DC,DP,DA,SA,AA, Standard: DIN ... Standard: DIN EN 14420-7-2005Material:1) body: Aluminum2) Handle: Brass(Forging)3) Ring: Steel(Zinc plated)4) Thread: Male/FemaleFeature ... , 21/2", 3", 4", 5", 6" 5) Type: A,B,C,D,E,F,DC,DP,DA,SA,AA/Aluminum6) Cast ... to customers’ requirements.10) We are qualified member of NFPA. camlock coupling